wham
[noun]
Synonyms: bang, blast, boom, burst, clap, crack, crash, slam, smash

[TahlilGaran] English Synonym Dictionary ▲

wham /wæm/ interjection

1. used to describe the sound of something suddenly hitting something else very hard:
Wham! The car hit the wall.

2. used to express the idea that something very unexpected suddenly happens:
Life is going along nicely and then, wham, you lose your job.
—wham noun [countable]

[TahlilGaran] Dictionary of Contemporary English ▲